export default (app) => {
    //自定义组件
    app.directive('waves', {
        beforeMount(el, binding, vnode) {
            // console.log(14, vnode);
            el.addEventListener('mousedown', e => {
                const customOpts = Object.assign({}, binding.value)
                const opts = Object.assign({
                    ele: el, // 波纹作用元素
                    type: 'hit', // hit点击位置扩散center中心点扩展
                    color: 'rgba(0, 0, 0, 0.15)' // 波纹颜色
                }, customOpts)
                const target = opts.ele
                if (target) {
                    target.style.position = 'relative'
                    target.style.overflow = 'hidden'
                    const rect = target.getBoundingClientRect()
                    let ripple = target.querySelector('.waves-ripple')
                    if (!ripple) {
                        ripple = document.createElement('span')
                        ripple.className = 'waves-ripple'
                        ripple.style.height = ripple.style.width = Math.max(rect.width, rect.height) + 'px'
                        target.appendChild(ripple)
                    } else {
                        ripple.className = 'waves-ripple'
                    }
                    switch (opts.type) {
                        case 'center':
                            ripple.style.top = (rect.height / 2 - ripple.offsetHeight / 2) + 'px'
                            ripple.style.left = (rect.width / 2 - ripple.offsetWidth / 2) + 'px'
                            break
                        default:
                            ripple.style.top = (e.pageY - rect.top - ripple.offsetHeight / 2 - document.body.scrollTop) + 'px'
                            ripple.style.left = (e.pageX - rect.left - ripple.offsetWidth / 2 - document.body.scrollLeft) + 'px'
                    }
                    ripple.style.backgroundColor = opts.color
                    ripple.className = 'waves-ripple z-active'
                    return false
                }
            }, false)
        }
    });
}